Hook having releasable safety locking means



July'1 5, 1952' F. AMELUNG HQOK HAVING RELEASABLE SAFETY LCCKING MEANSFiled Dec. 1, 1948 7 III;

IN V EN TOR.

Patented July 15, 1952 I ED FATENT lielEi w nooK HAvI nGRELEAsABtESAFETY Q KI AlexandenFhAmelung, City; Mo; Application lle ceniher 1,1348",;SeniaIENoLGZZBQQ This-invention has to" do'withflc'ouplinfievices off the kind particularly: adapted" for use withcranes'toreleasably attach vthe "loop; of a' chain;

a; sling or" the" like. member: thereto? end thereof the member Being;-provided with structure slidablypmountedj thereon capg'tb le .of'fmovingto. and from aposition closing themouth ofthe hook and" therebyembracing a portiorf of, a chain. link. or: other member within thehook-Q, g a. r Another important'nb'i ectf'of the prfesentlhvene tion'isto provide;,a:, coupling; having; abar, provided. with. an inclined I'recess for-. receiving va, chainiloop or. .th'mlike VandJgsIidaBle:means; on.

thezhar, for. releasahly; locking the. loop within. the.,recess, the;slidablej membier being ,further; providedj with means, serving tovej,Qithe ,chain,

loop. from; the: recess when,...the slidabl'e';memherr-movestojopenithe'recessn;;

' Other; object's-of; the. present .invntib rifreiate t'o.;.the.wavinwhichai ,couplingisfo medlhrough useofia pair. ofrelativelyslidable .members the. manner in which the two members arereleas ably interlocked; .the-,--.way-.in.:. which the mem- 31 Claims.(01. 294--s3) hers are provided with intersecting slots or recesses forreceiving aumem'ber to be coupled therewith; and. the way in which one,edge... of theslot "of one" of the members serves" to. eject the chainloop therefrom. j

Other more: minor objects-willtbQmade clear or become apparent as thefollowing specifica; tionrprogresses, reference being. hadtoe-thes-accompanying.- -drawing, wherein;.;.-

-Fig..l isra side elevationalsviewt of a -hoo or coupling havingreleasable safety lockingmeans made in accordance with my presentinvention.

Fig. 2 is a substantially central, longitudinal, cross sectional viewtaken on line II-II of Fig. 1.

Fig. 3 is an elevational view showing the side of the coupling oppositeto that illustrated in Fig. l; and,

Fig. 4 is a transverse, cross sectional view taken on line IV--IV ofFig. 1, looking in the direction of the arrows.

In Figs. 1 to 3, inclusive, of the drawing, there is illustratedfragmentarily a hook l0 forming a part of a crane or the like thatdepends from the outermost end of the crane boom in the usual manner.Figs. 1 to 4, inclusive, of the drawing, also, illustrate a chain l2having a link M of elongated character at one end thereof.

Manifestly, the members to be joined by the coupling" could. be usedanoutwardly-extending portion 24" that. ter elongated'i couplingabout"tobe described is? of no -pare ticulai moment, audit is contemplatedthatfthe coupling hereof be; capable of many otherfapplications; Forinstan-ce, onsmaller scales,;;this

' s: an ir c nn em means for'ends'bftirechains or even as a part ofa..wrist watchstrap or band with'bu light modifications;

The .coupling;

per? f e-g1 incl des en angere flathar I61 having .aniopemng l8.nearfoneend;

thereof'f'or receiving the-hook in in meme-ref lationship thereto. O-nelongitudinal edgeof the bar I GI has formed therein intermediatethe endsthereof an .elongated" slot.; 2fl' disposed "with" its longitudinal axisatan angle to both the lon' gitudinal and; transverse; axes of thegbarl6; In other. words, the.slotQor recess jllisinclined. away; from theopening l8 offhar l5; as the ins nermost end of. the .recess1201 is;approached Asleeve broadlydesignatedby the numera v.22" completely,circumsicribesithe bar" 5' j'f orf free, sliding movement thereon. Qne'edge of the; sleeveilproxiinal;-;,tov that edge" of...the' barglB'having recess ZQfdrmedtherein is providedjwit f natesat its-lowermostend adjacent. an

slot 26 formed near the lowermostf'end of the sleeve..22.

The lowermost. endio ieirt ension 3..

i rwith opposed; ;outwardly-.-extending, w ngs 8. ha a b n e e isli lv;in r apping' .r'e-L' lationshipwtopthe extension 2i4ZitselIIas theouter-w. m S find he w n fsj 8; are approachedi'. g'rne. twoside .wa-llsofrthe sleevefi are bothcut'. awayv to define the slot 2 6 which isinclined" inwardlyl a. direction opposite to and intersecting the:

direction of inclination of the recess 20.

,The. innermost-end ofthe. slot. is provide with a portion 30 having itslongitudinalaids substantially parallel with the longitudinal axes ofsleeve 22 and bar [6. One face of the sleeve 22' is provided with alongitudinal, elongated slot 32 near the uppermost end thereof throughwhich passes a screw 34 having a head that is of greater diameter thanthe width of the slot 32. This screw 34 is threaded within aninternally-tapped opening 35 formed in the bar l6.

The opposite face of the sleeve 22 has a bifurcated boss 38 forpivotally receiving a trigger 40 through the medium of a shaft 42 thatpivotally interconnects trigger 40 with the boss 38. Spaced inwardlyfrom the boss 38 on the same face of sleeve 22 therewith is anupstanding cylinder 44 that is open at that end thereof next adjacentsleeve 22 and provided with an open- 3 ing 46 in its outermost end forslidably receiving a pin 48.

The outermost end of the pin 48 is provided with a portion 50 of reduceddiameter for receiving bifurcated end 52 of the trigger 48. A spring 54in cylinder 44 is coiled about the pin 48 and bears against a shoulder56 on the pin 48 for yieldably holding the latter at the innermost end of'jits path of travel. v p

In addition to the opening 36 in bar I6, there is provided an opening 58and a recess 60 in bar I6 for receiving the innermost end of the pin 48in the manner illustrated in Fig. 2 of the drawing.-

A cable 62 has one end thereof secured to the trigger 40 on one side-ofthe boss 38 opposite to the bifurcations 52. under a' pulley 64rotatably mounted on a bifur:

cated bracket 66 that is, in turn, fixed to bar I6 immediately inwardlyfrom the opening I8. I

In operation, when the sleeve 22 is in the osition shown by full linesinFig. 1 and, also, in Figs. 2 .and;4,1inclusiv.e, such sleeve 22completely covers the mouth of the recess 2ll with thelink I4 of chain12 embraced therein. Specifically,

the link I4 isat the innermost end of the recess 20 and within thatportion 30 of the inclined slot,

26 of sleeve 22. a I

With the pin 48 disposed in the opening 58 of.

bar-l6, sleeve 22 is positively. locked against slidinglmovement on barI6, andthe link I4 isiheld in position and against displacement from theslot 20. The pulling action upon the cable I52 will release pin 48 fromthe opening 58, permittingsliding movement of sleeve 22 towardtheopening I8. As the cable 62 is continued to be pulled, the longitudinaledges of slot 26 will bear against loop I4 causing the same toislideoutwardly'in the recess 20 until such .loop I4 is released entirely fromconnection with bar It.

Releasing ofthe cable 62 at this point in the operation will permit pinI4.to enter the opening 36 by virtue of they action of coil spring 54.Per,- mitting of the sleeve 22 to slide away from the opening I8 to apoint where pin 48 will enter recessBO places the slots 20 and 26 indirect registering relationship where the loop I4 of chain I2 can beinserted in the recess 20.

7 When .such movement of the loop I4 intorecess'20 takes place, theextension 24 and particularly wings 28 thereof will serve to guide linkl4 into place within recess 20. If a load is being carried by the chainI2, cable 62 may be connected to awinch forming a part of the cranewith'which the coupling is used capable of lifting such load when thesleeve 22 is caused to move on bar I6 toward the end thereof havingopening 3.. l

Whileonemodification only of the present in- 4 vention has beenillustrated and described, such changes and alterations thereto as mightfairly come within the scope of the appended claims are contemplatedhereby.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A hook comprising an elongated bar adapted for-attachment to asupport atojne end'fithereof and having an oblique slot extending"toward the opposite end thereof; a sleeve on the bar and Y slidablelongitudinally thereof, said sleeve having an oblique slot extendingtoward said one end of the bar;' a laterally extending portion on saidThis cable 62 is trained sleeve; and a pair of opposed wings on saidportion, said wings being inclined in the same direction as the slot inthe bar and extending outwardly beyond the slot in the sleeve,presenting aguide'for facilitating insertion of a loop into the slot ofthe bar.

2; A hook comprising an elongated baradapted forattachment to a supportat one end thereof and having an oblique slot extending toward theopposite end thereof; a sleeve-on thebar and slidable longitudinallythereof, said sleeve having an'obliqueslot extending toward said one-endof the bar; va spring-loaded, locking pin reciprocably carried by th'esleev e, saidbarfh'aVing an opening forreceiving the] pin;- .and, atrigger swingably mounted on the sleeve and engaging, the pin forretracting the latter from the open- 3. A hook comprising an elongatedbar adapted for attachment to a submit atone end thereof and having anobliqueslot extendingtoward the opposite end thereof; a sleeve on thebar. and slidable longitudinally thereof; said sleeve having. an obliqueslot extending toward said one end of thebar; a spring-loaded, lockingpin reciprocably carriedby'the sleeve, said bar having an opening for"receiving the pin; a trigger. swingably mounted'on the sleeveandengaging the pin for,

I i. R ER I D,

The following references areof record in the file of this patent: p i fUNITED STATES PATENTS Number Name Date 1,130,613 Klock Nov. 2,19151,332,784 Warlick Mar. 2, 1920 1,576,197 Kufiel et-al. Mar. 9.1926

'. LEXAN R a Mt v ifi Sept. 811942

